California will take the lead in saying goodbye to the high-energy incandescent bulbs next January 1, while other states will eliminate substandard incandescent bulbs by 2020.

The rules still allow stores to sell old incandescent bulbs, but prohibit the sale of incandescent lamps that do not produce standard specifications after January 1.

The rule comes in 2007, when George W. Bush, the former US president, signed a bill to "gradually implement the new light bulb standards", with the latest light bulb rules to take effect in 2020, while federal law allows California to start regulations two years in advance, starting on New Year's Day in 2018.

In fact, the requirement is not a blanket ban on incandescent bulbs, but requires that the incandescent lamp manufactured after January 1 next year must meet the standard of 45 lumens per watt, which is three times times as efficient as the original incandescent light bulb. However, there are few incandescent lamps in the market that meet the new regulatory standards, and most consumers may turn to the provincial lights (CFL) or LED lights.

Compared to incandescent lamps, LED lights do not require warm lighting time, but also save 80% of the power.

60 watts incandescent bulbs and 10 watt LED lights have the same lighting effect, and led life is also longer, if the use of 3 hours a day to calculate, can use about 15 years to 20, eliminating the trouble of replacing the bulb. The Natural Resources Conservation Council (Natural) estimates that if 200.005 million incandescent bulbs in California are replaced with LED lights, the state will be able to save 1 billion of dollars in electricity bills.